<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>优惠券兑换</title>
    <script src="/js/jquery-3.3.1.min.js"></script>
</head>
<body>
<span th:text="${errorMessage}"></span>
</body>
</html>